diff --git a/library/compiler-builtins/src/lib.rs b/library/compiler-builtins/src/lib.rs
index 8d8d4a2fee00..619b6ac7afbd 100644
--- a/library/compiler-builtins/src/lib.rs
+++ b/library/compiler-builtins/src/lib.rs
@@ -12,7 +12,6 @@
 #![feature(compiler_builtins)]
 #![feature(core_intrinsics)]
 #![feature(naked_functions)]
-#![feature(i128_type)]
 #![feature(repr_simd)]
 #![feature(abi_unadjusted)]
 #![feature(linkage)]